[PATCH v2 11/11] amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking`

Mario Limonciello
2024-09-03T20:37:20Z

`amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU
core based on platform conditions. Explicitly include it in the
documentation.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
Documentation/admin-guide/pm/amd-pstate.rst | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
index d5c050ea390dc..210a808b74ec2 100644
--- a/Documentation/admin-guide/pm/amd-pstate.rst
+++ b/Documentation/admin-guide/pm/amd-pstate.rst
@@ -252,7 +252,8 @@ In some ASICs, the highest CPPC performance is not the one in the ``_CPC``
table, so we need to expose it to sysfs. If boost is not active, but
still supported, this maximum frequency will be larger than the one in
``cpuinfo``. On systems that support preferred core, the driver will have
-different values for some cores than others.
+different values for some cores than others and this will reflect the values
+advertised by the platform at bootup.
This attribute is read-only.

``amd_pstate_lowest_nonlinear_freq``
@@ -268,6 +269,12 @@ This attribute is read-only.
Whether the platform supports the preferred core feature and it has been
enabled. This attribute is read-only.

+``amd_pstate_prefcore_ranking``
+
+The performance ranking of the core. This number doesn't have any unit, but
+larger numbers are preferred at the time of reading. This can change at
+runtime based on platform conditions. This attribute is read-only.
+
``energy_performance_available_preferences``

A list of all the supported EPP preferences that could be used for
--
2.43.0